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bacteria, and lesions from its bites may also lead to lameness in sheep. The possibility that the hairy tick may be a vector of sweating sickness (virus) of cattle has been mentioned.

IDENTIFICATION

Male: H. rufipes, almost without exception, is a large, robust, Shiny black #: with a comparatively broad body outline. Its scutum is densely and rather uniformly punctate, so much so that the lateral grooves are obscured. The punctations are close together and while they give the impression of being rather uniform, they usually grade imperceptibly from large posteriorly to smaller anteriorly. There is little differentiation of the caudal area. Wentrally, the subanal shields are directly posterior of the adanals and the circumspiracular area is more or less hirsute, but a fair to dense accumulation of hairs always occurs in this area. The ventral integument is usually somewhat more hirsute than in other species. The legs are reddish brown with bright, paler rings. The posterior body margin is typically broadly rounded but not infrequently may be somewhat constricted and thus tend to approach the form of that in H. impressum. Newly molted specimens are reddish brown and rare preserved individuals show this color. The body shape of some specimens is more narrowly elongate than is typical for this species, but such individuals always appear to be rather weak and poorly nourished.

Females: This sex often reaches considerable size. Circumspiracular pilosity and color are like those of the male; scutal punctations are like those of the anterior part of the male scutum. The genital apron is a wide shield that bulges strongly from a deep anterior and posterior indentation. The outline of the apron is much like that of H. marginatum and H. impressum; however the division of the apron of # latter species into an anterior ridge and a posterior button readily

separates this from H. rufipes.

The larva has been sketched by Bedford (1934) and Theiler (1943B). T

Figures 186 and 187, d, dorsal and ventral views
Figures 188 and 189, Q, dorsal and ventral views

A, Q, genital area. B to D, Q, genital area outline and profile. B, unengorged. C, partly engorged. D, fully engorged.

HYALOMMA TRUNCATUM
an"Specimens

- 491

[graphic]

HYALOMMA TRUNCATUM Koch, 1844.
(Figures 186 to 189)

THE AFRICAN HYALOMMA

NOTE: The Nuttall school referred to H. truncatum as H. aegyptium. During the past five years, most authors have called # species H. transiens, the authority for which has been attributed to Schulze } or to Delpy (1946A). Feldman-Muhsam's (1954) studies of Koch's type specimens leave no doubt that this species is Koch's (1844) H. truncatum. Feldman-Muhsam (op. cit.) has also compared the type specimens of several of Schulze's African "species" and found them to be identical with H. truncatum. These are noted below in the distribution section. " "

L N 9 d. EQUATORIA PROVINCE RECORDS l Lugurren Phacochoerus aethiopicus bufo Jan 1 TOrit Sus scrofa Sennaarensis Mar 1 1 Kajo Kaji Syncerus caffer aequinoctialis - (SVS) l l Kapoeta domestic cattle Jul (SWS) l l Torit domestic cattle Jul l 5 9 Torit domestic cattle Dec # l Lalanga domestic cattle Dec (SWS) 2 2 Iliu domestic cattle Dec 12 4 Tombe domestic cattle Jan (SVS) 4 8 Kapoeta domestic cattle Dec 2 Loronyo domestic goats Jan 2 Torit domestic goats Jan Tortoise l l Juba Kinixys belliana Dec

DISTRIBUTION IN THE SUDAN

The following material has been studied:

Bahr El Ghazal: Galual-Nyang Forest (Large numbers of adults from several giraffes in March, May, and June; SVS. Moderate numbers of adults from forest buffalos from February through April; SWS, HH. Small numbers of adults from tiang, roan antelope, domestic horse, and on ground from February to April; SVS, HH). Fanjak (Small numbers of adults from cattle, February and March; SVS, HH). Wau (roan antelope; SGC). Yirol (cattle; SVS).

Note: The following records consist of one to ten adult specimens per collection unless otherwise mentioned.

Upper Nile: Makier (cattle; SVS).

Blue Nile: Lake Ras Amer (camel; SGC). Hassa Heissa (camel; G. Kohl's det., G. B. Thompson, correspondence). Wad Medani (cattle and camels; HH).

Darfur: Nyala (camel; SVS). Muhagariya (horses, donkeys, cattle, and camels; SVS). Zalingei (camels, cattle, horses, donkeys, and goats; SVS). Kulme (no host record; BMNH). Radom (cattle; SVS).

Kordofan: Talodi and Heiban (cattle; SVS).
Khartoum: Apparently not established in this Province

but arrives in fairly large numbers on Kordofan and Darfur cattle for export to foreign markets; HH.7

Kassala: Kassala (goats; SVS). See EGYPT below.

Northern: Rare in this Province but arrives at the Wadi Halfa Quarantine on cattle en route to Egypt. Known only from report by Chodziesner (1924) from Delgo.

DISTRIBUTION

H. truncatum is the sole endemic representative of this

genus that is widely spread throughout the Ethiopian Faunal

Region (Figure 1) and nowhere else. It commonly occurs in the drier parts of this Region but appears to increase in numbers

towards and north of the equator. It is rare or absent in forests of western Africa.

ATLANTIC OCEAN: CANARY ISLANDS (Specimens from dogs, Tenerife,"I'06, in BMNH collections; HH det.).

NORTH AFRICA: EGYPT (0ccurs only in Gebel Elba area of extreme Southeastern Egypt adjacent to Sudan frontier (Kassala Province); numerous males arrive at the Cairo abattoir on cattle from the Sudan and East Africa but this species has not established itself as a result of these introductions: Hoogstraal, ms.).

WEST AFRICA: FRENCH WEST AFRICA (As H. truncatum Sp. nov. 5 Koch T3A..." As H. ae ium impressum transiens: Schulze 1919. As H. transiens: Rousselot # (Numerous specimens in single lot from cattle in BMNH collections; HH det.).

PORTUGESE GUINEA (As H. savignyi: Tendeiro 1948,1949A, 1951F,1952A,0,D. From Tendeiro's #A discussion it is evident that he is referring to H. truncatum (= H. transiens) but prefers to call it H. savignyi. TIt is Tikely that one to three other Hyaloma species occur in Portugese Guinea).

NIGERIA (As H. aegyptium: Simpson 1912A,B. As H. impressum transiens: Unsworth # As H. impressum subsp.: #.

transiens: Unsworth 1952. # below). GOLD COAST (As H. aegyptium: Simpson 1914). TOGO (Feldman-Muhsam 1954 states # H. impressum brunneiparmatum Schulze and Schlottke, 1930, is a synonym of H. truncatum; however, from examination of Miss J. B. Walker's Kenya reared material of H. # in which the parma varies in size and color, it is eviden

H. brunneiparmatum is a synonym of H. albiparmatum).

CENTRAL AFRICA CAMEROONS (As H. aegyptium impressum transiens:

Chodziesner I:22. "As H. transiens: "Rageau I;5I, • ROllSSG.LO 1951, 1953B. Unsworth I952). FRENCH EQUATORIAL AFRICA (As H.

nitidum from "New Cameroons": Schulze 1919. Chodziesner 1924. As H. Impressum nitidum: Schulze and Schlottke 1930. Kratz

1940. e also Feldman Muhsam 1954. As H. ae ium impressum transiens: Chodziesner 1924. As H. transiens: # T951,

: "BELGIAN CONGO (As H. transiens: Theiler and Robinson

1954).

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